Max Johnson 66e71cce11 codex-rs/app-server: add health endpoints for --listen websocket server (#13782) ...

Healthcheck endpoints for the websocket server

- serve `GET /readyz` and `GET /healthz` from the same listener used for
`--listen ws://...`
- switch the websocket listener over to `axum` upgrade handling instead
of manual socket parsing
- add websocket transport coverage for the health endpoints and document
the new behavior

Testing
- integration tests
- built and tested e2e

```
> curl -i http://127.0.0.1:9234/readyz
HTTP/1.1 200 OK
content-length: 0
date: Fri, 06 Mar 2026 19:20:23 GMT

>  curl -i http://127.0.0.1:9234/healthz
HTTP/1.1 200 OK
content-length: 0
date: Fri, 06 Mar 2026 19:20:24 GMT
```

2026-03-09 22:11:30 +00:00

..

common

chore: plugin/uninstall endpoint (#14111)

2026-03-09 12:40:25 -07:00

suite

codex-rs/app-server: add health endpoints for --listen websocket server (#13782)

2026-03-09 22:11:30 +00:00

all.rs

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